// license:BSD-3-Clause // copyright-holders:Angelo Salese /* Sega 315-5641 / D77591 / 9442CA010 */ // this is the PICO sound chip, we are not sure if it's the same as a 7759 or not, it requires FIFO logic // which the 7759 does _not_ have but it is possible that is handled somewhere else on the PICO hardware. #ifndef MAME_SOUND_315_5641_H #define MAME_SOUND_315_5641_H #pragma once #include "upd7759.h" class sega_315_5641_pcm_device : public upd7756_device { public: sega_315_5641_pcm_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); virtual DECLARE_WRITE8_MEMBER(port_w) override; uint8_t get_fifo_space(); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void advance_state() override; uint8_t m_fifo_data[0x40]; uint8_t m_fifo_read; // last read offset (will read in m_fifo_read+1) uint8_t m_fifo_write; // write offset }; DECLARE_DEVICE_TYPE(SEGA_315_5641_PCM, sega_315_5641_pcm_device) #endif // MAME_SOUND_315_5641_H